package com.jin.concurrent.example.atomic;

import com.jin.concurrent.annoations.ThreadSafe;
import lombok.Getter;
import lombok.extern.slf4j.Slf4j;

import java.util.concurrent.atomic.AtomicIntegerFieldUpdater;

/**
 * @author JinLiu
 */
@Slf4j
@ThreadSafe
public class AtomicExample5 {

    // volatile修饰 并且不是static
    @Getter
    public volatile int count = 100;

    private static AtomicIntegerFieldUpdater<AtomicExample5> updater = AtomicIntegerFieldUpdater.newUpdater(
            AtomicExample5.class, "count");

    public static void main(String[] args) {

        AtomicExample5 example5 = new AtomicExample5();

        if (updater.compareAndSet(example5, 100, 110)) {
            log.info("success count1: {}", example5.getCount());
        }

        if (updater.compareAndSet(example5, 100, 110)) {
            log.info("success count2: {}", example5.getCount());
        } else {
            log.info("fail count3: {}", example5.getCount());
        }
    }

}
